[SketchySeaBeast]

Given how badly they flubbed their entries into smartphones, I'm kind of glad they are trying again in this new form-factor. Given that it's relying on Android, it should have more staying power than before (and an app store that isn't awful).

[WorldMaker]

Given it's relying on Android now and doesn't seem to have (based on this announcement) any compelling reason to exist long term in the ugly, over-crowded OEM market of Android marketing, it's a gimmick and shouldn't have any staying power at all.